Orientation of directional antennas using horizontal position information

ABSTRACT

Systems, methods, and apparatus are provided for enabling orientation of directional antennas even when one or more of the directional antennas are moving. Position information for each directional antenna is transmitted using an omnidirectional antenna transmitting at a low bandwidth and a low power. The position information of the directional antennas is used to orient the directional antennas so that a high bandwidth, low power wireless connection can be enabled and/or maintained between the directional antennas. The position information is periodically transmitted and the orientation of the directional antennas is updated as one or more of the directional antennas move so that the wireless connection between the directional antennas is maintained.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional of and claims the benefit of U.S.Utility application Ser. No. 15/416,713, filed Jan. 26, 2017, which is adivisional of and claims the benefit of U.S. Utility application Ser.No. 14/711,737, filed May 13, 2015, entitled “Orientation of DirectionalAntennas,” each of which is incorporated by reference herein in itsentirety.

BACKGROUND

Wireless communication and data transmission has become ubiquitous withmultiple types of wireless networks, including Wi-Fi, cellular,satellite, etc. Wireless connections are also used to transmit data overlong distances. Typically, long-distance wireless communication thatenables high data rate transmission is accomplished with high-gaindirectional antennas. The gain of the antenna is a measure of increasein power that the antenna adds to the wireless signal. The direction ofthe antenna is the shape of the radiation pattern created by theantenna, which is typically measured in degrees and referred to asbeamwidths. The beamwidth of a directional antenna generally includes amain lobe and one or more side lobes.

As the gain of an antenna increases, the beamwidth of the antennadecreases. Thus, the higher the gain of the antenna, the smaller thebeamwidth. A higher gain provides a greater coverage distance of themain lobe, but reduced coverage angle (beamwidth). To transmit overlonger distances (e.g., greater than 20 kilometers), directionalantennas must be oriented so that the receiving antenna is within themain lobe of the transmitting antenna. This is typically accomplished bymounting both the transmitting and receiving antennas at fixed locationsand having operators at each antenna orient the antennas toward oneanother by measuring the signal strength between the antennas. When anorientation with the highest signal strength between the antennas isdetermined, the antennas are secured to the fixed locations so thatwireless connection between the antennas may be established andmaintained.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description is described with reference to the accompanyingfigures. In the figures, the left-most digit(s) of a reference numberidentifies the figure in which the reference number first appears. Theuse of the same reference numbers in different figures indicates similaror identical components or features.

FIG. 1 is a diagram illustrating a fixed location directional antennacommunicating with a moving directional antenna, according to animplementation.

FIG. 2 is a diagram illustrating communication between two movingdirectional antennas, according to an implementation.

FIG. 3 is a diagram illustrating a multi-point data transmission,according to an implementation.

FIG. 4 is another example illustrating multi-point data transmission,according to an implementation.

FIG. 5 is a flow diagram illustrating an example process forestablishing and maintaining a high bandwidth wireless connectionbetween directional antennas, according to an implementation.

FIG. 6 is a flow diagram illustrating an example sub-process fordetermining a desired directional antenna orientation, according to animplementation.

FIG. 7 depicts a block diagram illustrating various components of avehicle control system, according to an implementation.

FIG. 8 is a block diagram of an illustrative implementation of a serversystem that may be used with various implementations.

While implementations are described herein by way of example, thoseskilled in the art will recognize that the implementations are notlimited to the examples or drawings described. It should be understoodthat the drawings and detailed description thereto are not intended tolimit implementations to the particular form disclosed but, on thecontrary, the intention is to cover all modifications, equivalents andalternatives falling within the spirit and scope as defined by theappended claims. The headings used herein are for organizationalpurposes only and are not meant to be used to limit the scope of thedescription or the claims. As used throughout this application, the word“may” is used in a permissive sense (i.e., meaning having the potentialto), rather than the mandatory sense (i.e., meaning must). Similarly,the words “include,” “including,” and “includes” mean “including, butnot limited to.” Additionally, as used herein, the term “coupled” mayrefer to two or more components connected together, whether thatconnection is permanent (e.g., welded) or temporary (e.g., bolted),direct or indirect (i.e., through an intermediary), mechanical,chemical, optical, or electrical. Furthermore, as used herein,“horizontal” flight refers to flight traveling in a directionsubstantially parallel to the ground (i.e., sea level), and that“vertical” flight refers to flight traveling substantially radiallyoutward from the earth's center. It should be understood by those havingordinary skill that trajectories may include components of both“horizontal” and “vertical” flight vectors.

DETAILED DESCRIPTION

Described are systems, methods, and apparatus for dynamically orientingtwo or more directional antennas, even when one or more of thosedirectional antennas are moving. Position information for eachdirectional antenna is transmitted using an omnidirectional antennatransmitting at a low bandwidth and a low power. Position information,as used herein, includes at least one of an approximate horizontalposition (i.e., latitude, longitude), an approximate altitude (i.e. theposition above or below the “horizon”), an approximate angle relative tothe “horizon”, and/or an approximate orientation about an axisperpendicular to the “horizon.” For example, position information of anantenna may include the approximate horizontal position (latitude,longitude), the approximate altitude of the antenna, the approximateangle of the antenna, and the approximate orientation of the antenna.

Position information of directional antennas transmitted/received withomnidirectional antennas is used to orient the directional antennas sothat a high bandwidth, low power wireless connection can be enabledand/or maintained between the directional antennas. As used herein, a“high bandwidth” connection may be any connection having greater than 10megabits per second data transfer rate. Likewise, a “low bandwidth”connection, as used herein is intended to mean any connection havingless than approximately 10 megabits per second data transfer rate. Theposition information is periodically transmitted and the orientation ofthe directional antennas is updated as one or more of the directionalantennas move so that the wireless connection between the directionalantennas is maintained.

In some implementations, one of the directional antennas may be at afixed location and one of the directional antennas may be coupled to amoving vehicle, such as an unmanned aerial vehicle (“UAV”). As thevehicle moves, the position information of the vehicle is provided tothe fixed location so that the orientation of the fixed locationdirectional antenna may be adjusted to remain oriented toward thedirectional antenna coupled to the vehicle. Likewise, an antennaorientation controller of the vehicle may utilize the positioninformation of the directional antenna coupled to the vehicle and theknown position information for the fixed location antenna to adjust theorientation of the directional antenna coupled to the vehicle so that itremains oriented toward the fixed location directional antenna.

In some implementations, both directional antennas may be moving. Forexample, each directional antenna may be coupled to a different vehicle.In such an example, each vehicle may transmit respective positioninformation relating to the directional antenna coupled to that vehicle.Likewise, the antenna orientation controller of each vehicle may utilizethe position information for the directional antenna coupled to thatvehicle and the position information for the directional antenna coupledto the second vehicle to orient the directional antenna of that vehiclewith the directional antenna of the second vehicle.

FIG. 1 is a diagram illustrating a fixed location directional antenna108 communicating with a moving high-gain directional antenna 102,according to an implementation. In this example, the fixed locationdirectional antenna 108 is mounted to a tower at a remote location 112.While a tower is illustrated in FIG. 1, it will be appreciated that afixed location directional antenna may be coupled to any stationaryobject (e.g., tower, building, and pole). The moving directional antenna102 is coupled to a vehicle, in this example a UAV 101. While a UAV isillustrated in FIG. 1, it will be appreciated that a moving directionalantenna may be coupled to any moving object (e.g., UAV, aerial vehicle,unmanned ground based vehicle, ground based vehicle, an unmanned waterbased vehicle, and a water based vehicle).

If a high bandwidth wireless connection with the UAV 101 is to beestablished but the distance between the remote location 112 and the UAV101 is such that a typical high bandwidth wireless connection (e.g.,Wi-Fi) is not available, the UAV 101 may transmit to the remote location112, using the omnidirectional antenna 106, position information for thedirectional antenna 102 coupled to the UAV 101. As discussed above, theposition information may include one or more of the approximatehorizontal position (e.g., latitude, longitude), approximate altitude,approximate angle, and/or approximate orientation of the directionalantenna coupled to the UAV 101. The angle and/or orientation of thedirectional antenna may be maintained by the antenna orientationcomponent of the UAV 101. The horizontal position and/or altitude may bedetermined, for example, based on the horizontal position and altitudeinformation obtained from the navigation system of the vehicle controlsystem (discussed below with respect to FIG. 7). For example, thenavigation system may receive global positioning system (GPS)information that identifies the horizontal position of the UAV 101.Likewise, the navigation system may include an altimeter that is used todetermine the approximate altitude of the UAV 101. The horizontalposition of the UAV may be utilized as the horizontal position of thedirectional antenna coupled to the UAV. For example, the directionalantenna may be coupled at a location on the UAV that is approximatelyin-line with the GPS receiver of the UAV 101 so that the determinedhorizontal position of the UAV 101 corresponds with the approximatehorizontal position of the directional antenna. In otherimplementations, the offset between the location of the GPS receiver andthe directional antenna may be known and the determined horizontalposition of the UAV may be adjusted by the known offset to determine theapproximate horizontal position of the directional antenna. In stillanother implementation, the determined horizontal position of the UAVmay be utilized as the approximate horizontal position of thedirectional antenna regardless of where on the UAV the directionalantenna is coupled.

Likewise, the navigation system may include an altimeter that is used todetermine the approximate altitude of the UAV 101. For example, thedirectional antenna may be coupled at a location on the UAV that is aknown distance from the altimeter and the determined altitude of the UAVmay be adjusted by the known difference to determine the approximatealtitude of the directional antenna. In still another implementation,the determined altitude of the UAV may simply be utilized as theapproximate altitude of the directional antenna regardless of where onthe UAV the directional antenna is coupled.

Because of the distance between the remote location 112 and the UAV 101,the position information of the directional antenna 102 coupled to theUAV 101 is initially transmitted via a wireless connection 114 betweenthe omnidirectional antenna 106 of the UAV and the omnidirectionalantenna 110 of the remote location 112. As is known, an omnidirectionalantenna radiates in a 360-degree pattern and can transmit information,at a low bandwidth, over long distances. For example, theomnidirectional antenna may be configured to transmit in the900-Megahertz (“MHz”) industrial, scientific, and medical (ISM) band at10 kilobits per second (“kbs”). In such a configuration, theomnidirectional antenna is able to transmit the position information todistances exceeding sixty kilometers.

When the position information of the UAV 101 is received by theomnidirectional antenna 110 at the remote location 112, an antennaorientation controller may orient the directional antenna 108 toward theposition of the directional antenna 102 so that the directional antenna102 is in the main lobe of the directional antenna 108. Likewise, theantenna orientation controller of the UAV 101 orients the directionalantenna 102 toward the position of the fixed location directionalantenna 108 so that the directional antenna 108 is in the main lobe ofthe moving directional antenna 102. In some implementations, directionalantennas 102, 108 may be mechanically oriented such that the directionalantennas are physically positioned to correspond to the desiredorientation. For example, the directional antenna 102 may be coupled tothe UAV 101 with a gimbal 104. The antenna orientation controller of theUAV 101 may determine the desired orientation of the directional antenna102 and orient the antenna by adjusting the position of the gimbaland/or by reorienting the UAV 101.

In other implementations, the directional antennas may be electronicallysteerable such that the direction of the main lobe may be alteredelectronically. In such an implementation, the directional antenna maybe an electronically steerable phased array antenna that is mounted ontoand/or incorporated into the frame of the UAV 101. In otherimplementations, the directional antennas may be oriented using acombination of mechanical movement and electronically steerableorientation of the directional antennas.

Once the directional antennas 102, 108 are oriented, a high bandwidthwireless connection 116 may be established between the directionalantennas 102, 108 so that data can be transmitted between the UAV 101and the remote location 112. For example, the high bandwidth wirelessconnection may be established in the 5.8 gigahertz (“GHz”) ISM band.

As the UAV 101 moves, the position information for directional antenna102 coupled to the UAV 101 may be periodically determined and sent tothe remote location 112 so that the orientation of the directionalantenna 108 at the remote location can be adjusted. By adjusting thedirectional antenna 108 of the remote location 112 as the UAV 101 moves,the wireless connection 116 between the directional antenna 108 at theremote location 112 and the directional antenna 102 of the UAV 101 ismaintained. Likewise, the antenna orientation controller of the UAV 101may utilize the updated position information of the UAV 101 and theknown position information of the fixed location to adjust theorientation of the directional antenna 102 of the UAV.

After a wireless connection 116 between remote location 112 and the UAV101 has been established between the directional antenna 108 and thedirectional antenna 102, the position information of the directionalantenna 102 of the UAV 101 may be periodically sent using theomnidirectional antenna 106 and/or using the wireless connection 116between the directional antennas 108, 102. In some implementations, theposition information of the directional antenna 102 of the UAV 101 maybe sent at defined intervals (e.g., every second, every two seconds). Inother implementations, the position information may be continuouslytransmitted from the UAV 101 to the remote location 112 using the highbandwidth wireless connection 116 once established.

FIG. 2 is a diagram illustrating communication between two movingdirectional antennas 202-1, 202-2, according to an implementation.Similar to the example discussed above with respect to FIG. 1, positioninformation of the first vehicle, in this example UAV 201-1, istransmitted using an omnidirectional antenna 206-1 and received at anomnidirectional antenna of a second vehicle, in this exampleomnidirectional antenna 206-2 and UAV 201-2. Likewise, positioninformation of the second UAV 201-2 is transmitted using theomnidirectional antenna 206-2 and received at the omnidirectionalantenna 206-1 of the first UAV 201-1. Each UAV 201 utilizes the receivedposition information of the other vehicle and their own determinedposition to orient the directional antenna 202 coupled to that vehicle.For example, the antenna orientation controller of the first UAV 201-1receives at the omnidirectional antenna 206-1 the position informationof the second directional antenna 202-2 of the second UAV 201-2. Theantenna orientation controller of the first UAV 201-1 determines fromthe vehicle control system (FIG. 7) the position information of thefirst directional antenna 202-1 coupled to the first UAV 201-1. Based onthe position information of the first directional antenna 202-1 and theposition information of the second directional antenna 202-2, theantenna orientation controller determines a desired orientation for thefirst directional antenna 202-1 and causes the first directional antennato be oriented according to the determined desired orientation. Asdiscussed above, the orientation of the first directional antenna 202-1may be done mechanically by adjusting the position of the UAV 201-1and/or by altering the orientation of the first directional antennausing a gimbal 204-1 or other mechanical component that couples thefirst directional antenna 202-1 to the UAV 201-1. Alternatively, or inaddition thereto, the first directional antenna may be an electronicallysteerable antenna such that the direction of the main lobe of theantenna may be electronically adjusted.

Continuing with the example, the antenna orientation controller of thesecond UAV 201-2 receives from the second omnidirectional antenna 206-2the position information of the first directional antenna 202-1 andreceives from the vehicle control system of the second UAV 201-2 theposition information of the second directional antenna 202-2. Based onthe position information of the directional antennas 202, the antennaorientation controller of the second UAV 201-2 orients the seconddirectional antenna so that the first directional antenna is in the mainlobe of the second directional antenna 202-2. Like the first directionalantenna 202-1, orientation of the second directional antenna 202-2 maybe done mechanically, electronically, and/or using a combination ofmechanical and electronic orientation.

In some implementations, the two UAVs may temporarily hold a position sothat orientation and connection of the directional antennas 202 can beestablished. Likewise, the UAVs 201 may transmit position information inan alternating manner. For example, the first UAV 201-1 may transmitposition information on odd seconds and the second UAV 201-2 maytransmit position information on even seconds. To synchronize the clocksof the UAVs 201, both UAVs may utilize clock information received by thevehicle control system, such as GPS clock signals.

Once the high bandwidth wireless connection 216 is established betweenthe directional antennas 202, it may be maintained as the UAVs move byadjusting the orientation of the two directional antennas. For example,each UAV 201 may continue transmitting position information using awireless connection 214 between the omnidirectional antennas 206 and thereceiving UAV may utilize that information to update the orientation ofthe connected directional antenna. In other implementations, once awireless connection 216 is established between the first directionalantenna 202-1 of the first UAV 201-1 and the second directional antenna202-2 of the second UAV 201-2, updated position information may betransmitted between the UAVs 201 using the high bandwidth wirelessconnection 216.

FIG. 3 is a diagram illustrating a multi-point data transmission,according to an implementation. Similar to the discussion above withrespect to FIG. 1, a vehicle, such as a UAV 301, may transmit positioninformation using an omnidirectional antenna 306. That positioninformation is received at a remote location 312 by anotheromnidirectional antenna 310 and an antenna orientation controller isused to orient the directional antenna 308 toward the directionalantenna 302 of the UAV 301. Likewise, the antenna orientation controllerof the UAV 301 utilizes the position information of the fixed locationdirectional antenna 308 and the determined position of the directionalantenna 302 coupled to the UAV 301 to orient the directional antenna 302toward the directional antenna 308 at the fixed location. Once oriented,a high bandwidth wireless connection can be established between thedirectional antenna 302 of UAV 301 and the directional antenna 308 ofthe remote location 312. Likewise, the high bandwidth wirelessconnection may be maintained by periodically sending updated positioninformation for the directional antenna 302 of the UAV 301 and adjustingthe orientation of the directional antennas 308, 302 so that eachdirectional antenna 308, 302 remains in the main lobe of the otherdirectional antenna 308, 302.

By establishing and maintaining a high bandwidth wireless connectionbetween the UAV 301 and the remote location 312, data can be quicklytransmitted to or received from the UAV 301. Likewise, as illustrated,data can be transmitted to multiple locations. For example, asillustrated, data can be transmitted from the remote location 312 to theUAV 301 over the high bandwidth wireless connection and then transmittedfrom the UAV 301 to another location, such as another vehicle 316. Theadditional transmissions may be long distance high bandwidth connectionsthat utilize directional antennas, may be shorter distance highbandwidth connections, etc. As illustrated in FIG. 3, the connectionbetween the remote location 312 and the UAV 301 is a high bandwidthwireless connection between two directional antennas that maintain theconnection by periodically adjusting the orientation of the directionalantennas 308, 302 based on updated position information. The wirelessconnection between the UAV 301 and the vehicle 316 is a traditionalWi-Fi connection that allows high bandwidth delivery of data between theUAV 301 and the vehicle 316. In other implementations, the connectionbetween the UAV 301 and the vehicle 316 may be a high bandwidth wirelessconnection that utilizes directional antennas in which the orientationof those antennas is updated to maintain the wireless connection therebetween. For example, the UAV 301 may be at a high altitude above thevehicle 316 such that a Wi-Fi connection is not available. In such aninstance, the directional antenna 314 may be utilized to establish awireless connection with the vehicle 316, using the implementationsdiscussed herein.

In the example illustrated in FIG. 3, a high definition Blu-ray movie istransmitted from the remote location 312 to the UAV 301 via the highbandwidth wireless connection established between the remote location312 and the UAV 301. Likewise, the UAV 301 transmits the Blu-ray movieto the vehicle 316. In such a configuration, a passenger in the vehicle316 may receive a streaming Blu-ray movie as the vehicle 316 istraveling.

FIG. 4 is another example illustrating multi-point data transmissions,according to an implementation. In the illustrated example, there aremultiple vehicles 401, 416, and multiple fixed location antennas 402each of which are in wireless connection with at least one other vehicle401, 416 and/or a fixed location antenna 402. As will be appreciated,any number and configuration of vehicles 401, 416 and/or fixed locationantennas 402 may be utilized to wirelessly transmit data. Each of thevehicles 401, 416, fixed location antennas 402, and/or remote computingresources 410 are configured to communicate with one another. Forexample, the vehicles 401, 416 may be configured to establish andmaintain high bandwidth wireless connections using directional antennasaccording to the implementations discussed herein. Likewise, if thevehicles 401, 416 are within an operating distance of one another, theymay be configured to establish and maintain a wireless connection usingother forms of wireless connectivity, such as Wi-Fi, Bluetooth, nearfield communication (“NFC”), etc.

In other implementations, the vehicles 401, 416, management system 426,and/or fixed location antennas 402 may utilize existing wirelessnetworks (e.g., cellular, Wi-Fi, satellite) to transmit positioninformation for use in orienting the directional antennas. In someimplementations, one or more of the remote computing resources 410,and/or fixed location antennas 402, may also communicate with each othervia another network (wired and/or wireless), such as the Internet.

The remote computing resources 410 may form a portion of anetwork-accessible computing platform implemented as a computinginfrastructure of processors, storage, software, data access, and othercomponents that is maintained and accessible via a network. Asillustrated, the remote computing resources 410 may include one or moreservers, such as servers 420(1), 420(2) . . . 420(N). These servers420(1)-(N) may be arranged in any number of ways, such as server farms,stacks, and the like that are commonly used in data centers.Furthermore, the servers 420(1)-(N) may include one or more processors422 and memory 424 that may store a management system 426 and/or anantenna orientation controller 412 that is used to orient fixed locationantennas 402, such as the fixed location antennas at remote locations112 (FIG. 1) or 312 (FIG. 3).

The management system 426 may be configured, for example, to communicatewith the fixed location antennas 402, vehicles 401, 416, materialshandling facilities and/or other facilities.

In some implementations, if a vehicle loses wireless connection withother vehicles via a high bandwidth connection between directionalantennas, the vehicle may activate another wireless connection path toregain connection. For example, if a vehicle loses connection with othervehicles, it may activate a cellular and/or satellite communication pathto obtain communication information from the management system 426,and/or a fixed location antenna 402. In some implementations, thevehicle may receive position instructions that identify a horizontalposition, altitude, antenna angle and/or antenna orientation that are tobe executed by the vehicle. In such an example, the UAV may execute theposition instructions. Likewise, another vehicle and/or a fixed locationantenna may orient a directional antenna in a position that correspondswith the delivered position instructions so that the vehicle canwirelessly connect with another directional antenna.

The connections between the vehicles 401, 416, fixed location antennas402, and remote computing resources 410 may be used to providecommunication (e.g., to share weather information, environmentinformation, location information, routing information, data) betweenvehicles, the management system 426, materials handling facilities,and/or other locations. Likewise, in some implementations, the wirelessconnections, and/or the vehicles 401, 416 may be used to providecoverage for other computing resources, such as personal computers,electronic book reading devices, audio players, mobile telephones,tablets, desktops, laptops, etc.

FIG. 5 is a flow diagram illustrating an example process 500 forestablishing a high bandwidth wireless connection between twodirectional antennas when at least one of the directional antennas aremoving or movable, according to an implementation. The example processof FIG. 5 and each of the other processes discussed herein may beimplemented in hardware, software, or a combination thereof. In thecontext of software, the described operations representcomputer-executable instructions stored on one or more computer-readablemedia that, when executed by one or more processors, perform the recitedoperations. Generally, computer-executable instructions includeroutines, programs, objects, components, data structures, and the likethat perform particular functions or implement particular abstract datatypes.

The computer-readable media may include non-transitory computer-readablestorage media, which may include hard drives, floppy diskettes, opticaldisks, CD-ROMs, DVDs, read-only memories (ROMs), random access memories(RAMs), EPROMs, EEPROMs, flash memory, magnetic or optical cards,solid-state memory devices, or other types of storage media suitable forstoring electronic instructions. In addition, in some implementations,the computer-readable media may include a transitory computer-readablesignal (in compressed or uncompressed form). Examples ofcomputer-readable signals, whether modulated using a carrier or not,include, but are not limited to, signals that a computer system hostingor running a computer program can be configured to access, includingsignals downloaded through the Internet or other networks. Finally, theorder in which the operations are described is not intended to beconstrued as a limitation, and any number of the described operationscan be combined in any order and/or in parallel to implement theprocess.

The example process 500 may be performed at each directional antenna forwhich a connection is to be established. For each antenna, thecorresponding antenna orientation controller considers the antenna thatit is controlling as the first directional antenna and the antenna towhich it is to establish or maintain a connection as the seconddirectional antenna. For example, if the wireless connection is to beestablished between a fixed location directional antenna and a movingdirectional antenna, the antenna orientation controller that iscontrolling the orientation of the fixed location antenna will considerthe fixed location antenna as the first directional antenna and themoving directional antenna as the second directional antenna. Likewise,the antenna orientation controller that is controlling the orientationof the moving directional antenna will perform the example process 500to orient the moving directional antenna and will consider the movingdirectional antenna that it is controlling as the first directionalantenna and the fixed location antenna as the second directionalantenna.

The example process 500 begins by determining position information for afirst directional antenna, as in 502. In some implementations, if thefirst directional antenna is a fixed location directional antenna, theposition information, or at least a portion thereof, may be knownbecause the position of the antenna is fixed. For example, thehorizontal coordinates and/or altitude of the fixed location antenna maybe maintained in a data store and accessible to the example process 500.Other aspects of the position information of the fixed location antenna,such as the angle of the directional antenna and/or the orientation, maybe maintained by the antenna orientation controller that controls theorientation of the fixed location antenna.

If the first antenna is a moving antenna that is coupled to a vehicle,the position information may be determined from the vehicle controlsystem. For example, the vehicle control system may receive GPSinformation that may be used to determine the horizontal position of thedirectional antenna coupled to the vehicle. Likewise, the vehiclecontrol system may also include an altimeter that is used to determinethe altitude of the directional antenna coupled to the vehicle. Theantenna orientation controller may also maintain information relating tothe orientation and/or angle of the directional antenna. For example, ifthe directional antenna is mechanically oriented, it may be initiallycalibrated to a known position, and each time it is adjusted the antennaorientation controller may update the known orientation of thedirectional antenna. In comparison, if the directional antenna iselectronically oriented, the orientation may be maintained/known to theantenna orientation controller.

The determined position information for the first directional antenna,referred to as the first position information, is then sent using afirst omnidirectional antenna that is at or near the location of thefirst directional antenna, as in 504. In transmitting the first positioninformation, the first position information may include anidentification of the first directional antenna and/or the vehicle, orfixed location to which the first directional antenna is coupled, theapproximate horizontal position of the first directional antenna, theapproximate altitude of the first directional antenna, the approximateorientation of the first directional antenna, the approximate angle ofthe first directional antenna, and/or a timestamp identifying when theinformation was determined.

In addition to sending the first position information using the firstomnidirectional antenna, second position information is received, as in506. The second position information corresponds to the seconddirectional antenna with which the first directional antenna is to beoriented. The second position information identifies at least one of theapproximate horizontal position of the second directional antenna, theapproximate altitude of the second directional antenna, the approximateangle of the second directional antenna, and/or the approximateorientation of the second directional antenna.

Based on the determined position information for the first directionalantenna and the received position information for the second directionalantenna, the desired directional antenna orientation sub-process isperformed, as in 600. The desired directional antenna orientationsub-process 700 is discussed in further detail below with respect toFIG. 7. The desired directional antenna orientation sub-process 700returns a desired directional antenna orientation.

Based on the returned desired directional antenna orientation, the firstdirectional antenna is oriented according to the desired directionalantenna orientation, as in 510. Finally, a high bandwidth wirelessconnection between the first directional antenna and the seconddirectional antenna is established or maintained, as in 512. Forexample, if the example process 500 is performed at each directionalantenna, the two directional antennas will be oriented so that each ispositioned in the main lobe of the corresponding directional antenna. Bypositioning each of the antennas in the main lobe of the correspondingdirectional antenna, a high bandwidth wireless connection may beestablished between the two directional antennas.

Likewise, if the example process 500 has already been performed by eachof the directional antennas such that a high bandwidth wirelessconnection has been established, the example process 500 may beperiodically repeated so that the position information for each antennais updated. Using the updated position information, the orientation ofeach directional antenna is updated so that the high bandwidth wirelessconnection between the two directional antennas is maintained. In someimplementations, the position information may be continually transmittedand received using wireless connection between omnidirectional antennas.However, in other implementations, once the high bandwidth wirelessconnection is established between the directional antennas, the positioninformation for the first directional antenna and the positioninformation for the second directional antenna may betransmitted/received using the directional antennas, rather than or inaddition to using the omnidirectional antennas. In such animplementation, if the high bandwidth wireless connection is lost, theexample process 500 may revert back to transmitting/receiving theposition information using the omnidirectional antennas.

FIG. 6 is a flow diagram illustrating an example sub-process 600 fordetermining a desired directional antenna orientation, according to animplementation. The example sub-process 600 begins by receiving thefirst position information for the first directional antenna, as in 602.In addition, the current signal strength measured at the firstdirectional antenna may also be determined, as in 604. For example, thesignal strength of the signal transmitted from the second directionalantenna may be measured at the first directional antenna and used, asdiscussed below, to further orient the first directional antenna so thatit is in the main lobe of the second directional antenna. Likewise, thesecond position information is also received by the example sub-process600, as in 606.

Because the example sub-process 600 may be performed each time anantenna orientation is to be performed, the first position informationfor the first directional antenna coupled to the first vehicle and thesecond position information for the second directional antenna coupledto the second vehicle may be stored each time it is received and used todetermine an anticipated trajectory of each vehicle. For example, as thefirst position information is received over a period of time, it may beconsidered collectively to identify an approximate speed, heading,and/or direction of travel of the first vehicle and the coupled firstdirectional antenna and determine an anticipated trajectory of the firstvehicle, as in 608. Likewise, the second position information receivedover a period of time may be used to determine an approximate speed,heading, and/or direction of travel for the second vehicle and coupledsecond directional antenna to determine an anticipated trajectory of thesecond vehicle, as in 610.

In some implementations, the latency in performing the example process500 and/or the example sub-process 600 may be considered along with thetime required to execute any commands to orient the first directionalantenna, as in 612. For example, if it takes approximately fivemilliseconds to perform the example process 500 and sub-process 600 andeight milliseconds to complete an orientation of the first directionalantenna, a total latency of 13 milliseconds may be determined for thefirst directional antenna.

Based on the first position information, second position information,determined anticipated trajectory of the first vehicle, determinedanticipated trajectory of the second vehicle, and the determinedlatency, a desired orientation for the first directional antenna isdetermined, as in 614. For example, rather than attempting to orient thefirst directional antenna toward the current position of the seconddirectional antenna, the first directional antenna may be orientedtoward an anticipated position of where the second directional antennawill be by the time the first directional antenna is actually oriented.For example, if the second directional antenna is traveling in adirection that includes a horizontal component and there is a latency inorienting the first directional antenna, the example sub-process 600 maysend instructions to orient the first directional antenna such that itis oriented ahead of the current position of the second directionalantenna so that it will be oriented toward the second directionalantenna when orientation of the first directional antenna is complete.

In some implementations, in addition to considering the position of thevehicles and/or latency, additional adjustments may be made based onmeasured signal strength. For example, if the example sub-process 600has been sending instructions to orient the first directional antennaapproximately three degrees ahead of the current position of the secondvehicle, it may, over time, alter that amount slightly (e.g., twodegrees, four degrees) and determine if the measured signal strengthincreases or decreases. If the measured signal strength increases, theantenna is oriented closer to the center of the main lobe of the seconddirectional antenna. In comparison, if the signal strength decreases, itcan be determined that the adjustment moves the first directionalantenna away from the center of the main lobe of the second directionalantenna.

Finally, the determined desired directional antenna orientation isreturned, as in 616.

FIG. 7 is a block diagram illustrating an example vehicle control system700, which may be utilized by a vehicle, such as a UAV. In theillustrated implementation, the vehicle control system 700 includes oneor more processors 702 coupled to a non-transitory computer readablestorage medium 720 via an input/output (I/O) interface 710. The vehiclecontrol system 700 may also include a propulsion controller 704 (e.g.,for controlling one or more motors, engines, etc.), a power controller706 and/or a navigation system 708. The vehicle control system 700further includes a network interface 716, one or more input/outputdevices 718, and an antenna orientation controller 712, which is used toorient a coupled directional antenna.

In various implementations, the vehicle control system 700 may be auniprocessor system including one processor 702, or a multiprocessorsystem including several processors 702 (e.g., two, four, eight, oranother suitable number). The processor(s) 702 may be any suitableprocessor capable of executing instructions. For example, in variousimplementations, the processor(s) 702 may be general-purpose or embeddedprocessors implementing any of a variety of instruction setarchitectures (ISAs), such as the x86, PowerPC, SPARC, or MIPS ISAs, orany other suitable ISA. In multiprocessor systems, each processor(s) 702may commonly, but not necessarily, implement the same ISA.

The non-transitory computer readable storage medium 720 may beconfigured to store executable instructions, data, travel paths, antennaorientation information, and/or data items accessible by theprocessor(s) 702. In various implementations, the non-transitorycomputer readable storage medium 720 may be implemented using anysuitable memory technology, such as static random access memory (SRAM),synchronous dynamic RAM (SDRAM), nonvolatile/Flash-type memory, or anyother type of memory. In the illustrated implementation, programinstructions and data implementing desired functions, such as thosedescribed herein, are shown stored within the non-transitory computerreadable storage medium 720 as program instructions 722, data storage724 and antenna orientation 726, respectively. In other implementations,program instructions, data, and/or antenna orientation may be received,sent, or stored upon different types of computer-accessible media, suchas non-transitory media, or on similar media separate from thenon-transitory computer readable storage medium 720 or the vehiclecontrol system 700. Generally speaking, a non-transitory, computerreadable storage medium may include storage media or memory media suchas magnetic or optical media, e.g., disk or CD/DVD-ROM, coupled to thevehicle control system 700 via the I/O interface 710. Programinstructions and data stored via a non-transitory computer readablestorage medium may be transmitted by transmission media or signals suchas electrical, electromagnetic, or digital signals, which may beconveyed via a communication medium such as a network and/or a wirelesslink, such as may be implemented via the network interface 716.

In one implementation, the I/O interface 710 may be configured tocoordinate I/O traffic between the processor(s) 702, the non-transitorycomputer readable storage medium 720, and any peripheral devices, thenetwork interface or other peripheral interfaces, such as input/outputdevices 718. In some implementations, the I/O interface 710 may performany necessary protocol, timing or other data transformations to convertdata signals from one component (e.g., non-transitory computer readablestorage medium 720) into a format suitable for use by another component(e.g., processor(s) 702). In some implementations, the I/O interface 710may include support for devices attached through various types ofperipheral buses, such as a variant of the Peripheral ComponentInterconnect (PCI) bus standard or the Universal Serial Bus (USB)standard, for example. In some implementations, the function of the I/Ointerface 710 may be split into two or more separate components, such asa north bridge and a south bridge, for example. Additionally, in someimplementations, some or all of the functionality of the I/O interface710, such as an interface to the non-transitory computer readablestorage medium 720, may be incorporated directly into the processor(s)702.

The propulsion controller 704 communicates with the navigation system708 (e.g., for adjusting the power of each propeller motor of thevehicle to guide the vehicle along a determined travel path). Thenavigation system 708 may include a global positioning system (GPS),indoor positioning system (IPS), or other similar system and/or sensorsthat can be used to navigate the vehicle to and/or from a location. Theantenna orientation controller 712 communicates with the navigationsystem 708 to obtain position information that is used to determine thehorizontal position and/or altitude of the UAV so the horizontalposition of the coupled directional antenna can be determined. Likewise,the antenna orientation controller may also control orientation of thedirectional antenna (e.g., by altering a servo motor and/or through anelectronically steerable antenna).

The network interface 716 may be configured to allow data to beexchanged between the vehicle control system 700, other devices attachedto a network, such as other computer systems (e.g., remote computingresources 210), and/or with vehicle control systems of other vehicles.For example, the network interface 716 may enable wireless connectionbetween the vehicle and a management system that is implemented on oneor more of the remote computing resources. As another example, thenetwork interface 716 may enable traditional wireless connection betweennumerous vehicles. In various implementations, the network interface 716may support communication via wireless general data networks, such as aWi-Fi network. For example, the network interface 716 may supportcommunication via telecommunications networks such as cellularcommunication networks, satellite networks, and the like.

In some implementations, input/output devices 718 may include one ormore displays, imaging devices, thermal sensors, infrared sensors, timeof flight sensors, accelerometers, pressure sensors, weather sensors,etc. Multiple input/output devices 718 may be present and controlled bythe vehicle control system 700. One or more of these sensors may beutilized to assist in the landing as well as the avoidance of obstaclesduring flight.

As shown in FIG. 7, the memory may include program instructions 722 thatmay be configured to implement the example processes and/orsub-processes described herein. The data storage 724 may include variousdata stores for maintaining data items that may be provided fordetermining directional antenna orientation. In various implementations,the parameter values and other data illustrated herein as being includedin one or more data stores may be combined with other information notdescribed or may be partitioned differently into more, fewer, ordifferent data structures. In some implementations, data stores may bephysically located in one memory or may be distributed among two or morememories.

Those skilled in the art will appreciate that the vehicle control system700 is merely illustrative and is not intended to limit the scope of thepresent disclosure. In particular, the computing system and devices mayinclude any combination of hardware or software that can perform theindicated functions, including computers, network devices, internetappliances, PDAs, wireless phones, pagers, etc. The vehicle controlsystem 700 may also be connected to other devices that are notillustrated, or instead may operate as a stand-alone system. Inaddition, the functionality provided by the illustrated components mayin some implementations be combined in fewer components or distributedin additional components. Similarly, in some implementations, thefunctionality of some of the illustrated components may not be providedand/or other additional functionality may be available.

Those skilled in the art will also appreciate that, while various itemsare illustrated as being stored in memory or storage while being used,these items or portions of them may be transferred between memory andother storage devices for purposes of memory management and dataintegrity. Alternatively, in other implementations, some or all of thesoftware components may execute in memory on another device andcommunicate with the illustrated vehicle control system 700. Some or allof the system components or data structures may also be stored (e.g., asinstructions or structured data) on a non-transitory,computer-accessible medium or a portable article to be read by anappropriate drive, various examples of which are described herein. Insome implementations, instructions stored on a computer-accessiblestorage medium separate from the vehicle control system 700 may betransmitted to the vehicle control system 700 via transmission media orsignals such as electrical, electromagnetic, or digital signals,conveyed via a communication medium such as a wireless link. Variousimplementations may further include receiving, sending, or storinginstructions and/or data implemented in accordance with the foregoingdescription upon a computer-accessible medium. Accordingly, thetechniques described herein may be practiced with other vehicle controlsystem configurations.

FIG. 8 is a block diagram of an illustrative implementation of a serversystem, such as the server system 800, which may be used in theimplementations described herein. The server system 800 may include aprocessor 801, such as one or more redundant processors, a video displayadapter 802, a disk drive 804, an input/output interface 806, a networkinterface 808, and a memory 813. The processor 801, the video displayadapter 802, the disk drive 804, the input/output interface 806, thenetwork interface 808, and the memory 813 may be communicatively coupledto each other by a communication bus 810.

The video display adapter 802 provides display signals to a localdisplay (not shown in FIG. 8) permitting an agent of the server system800 to monitor and configure operation of the server system 800 and/orto provide information (e.g., directional antenna orientation, etc.).The input/output interface 806 likewise communicates with externalinput/output devices not shown in FIG. 8, such as a mouse, keyboard,scanner, or other input and output devices that can be operated by anagent of the server system 800. The network interface 808 includeshardware, software, or any combination thereof, to communicate withother computing devices. For example, the network interface 808 may beconfigured to provide communications between the server system 800 andother computing devices, such as that of a vehicle, vehicle managementsystem 700, etc., via a network.

The memory 813 generally comprises random access memory (RAM), read-onlymemory (ROM), flash memory, and/or other volatile or permanent memory.The memory 813 is shown storing an operating system 814 for controllingthe operation of the server system 800. A binary input/output system(BIOS) 816 for controlling the low-level operation of the server system800 is also stored in the memory 813.

The memory 813 also includes a data store manager 820 that is configuredto manage one or more data stores 830. As used herein, the term “datastore” refers to any device or combination of devices capable ofstoring, accessing, and retrieving data, which may include anycombination and number of data servers, databases, data storage devicesand data storage media, in any standard, distributed or clusteredenvironment. The server system 800 can include any appropriate hardwareand software for integrating with the data store 830 as needed toexecute aspects of one or more applications for antenna orientation at aremote location, vehicle management system 700, etc.

The data store 830 can include several separate data tables, databasesor other data storage mechanisms and media for storing data relating toa particular aspect. For example, the illustrated data store 830includes mechanisms for maintaining information related to positioninformation for fixed location directional antennas. It should beunderstood that there may be additional aspects that can be stored inthe data store 830 and that additional data stores beyond the oneillustrated may be included. The data store 830 is operable, throughlogic associated therewith, to receive instructions from the serversystem 800 and obtain, update or otherwise process data in responsethereto.

The memory 813 may also include the management system 826 and/or anantenna orientation controller 812 that is used to orient fixed locationantennas using the implementations discussed above. The managementsystem 826 and/or the antenna orientation controller 812 may beexecutable by the processor 801 to implement one or more of thefunctions of the server system 800. In one implementation, themanagement system 826 and/or the antenna orientation controller 812 mayrepresent instructions embodied in one or more software programs storedin the memory 813. In another implementation, the management system 826and/or the antenna orientation controller 812 can represent hardware,software instructions, or a combination thereof.

The server system 800, in one implementation, is a distributedenvironment utilizing several computer systems and components that areinterconnected via communication links, using one or more computernetworks or direct connections. However, it will be appreciated by thoseof ordinary skill in the art that such a system could operate equallywell in a system having fewer or a greater number of components than areillustrated in FIG. 8. Thus, the depiction in FIG. 8 should be taken asbeing illustrative in nature and not limiting to the scope of thedisclosure.

Those skilled in the art will appreciate that, in some implementations,the functionality provided by the processes and systems discussed abovemay be provided in alternative ways, such as being split among moresoftware modules or routines or consolidated into fewer modules orroutines. Similarly, in some implementations, illustrated processes andsystems may provide more or less functionality than is described, suchas when other illustrated processes instead lack or include suchfunctionality respectively, or when the amount of functionality that isprovided is altered. In addition, while various operations may beillustrated as being performed in a particular manner (e.g., in serialor in parallel) and/or in a particular order, those skilled in the artwill appreciate that, in other implementations, the operations may beperformed in other orders and in other manners. Those skilled in the artwill also appreciate that the data structures discussed above may bestructured in different manners, such as by having a single datastructure split into multiple data structures or by having multiple datastructures consolidated into a single data structure. Similarly, in someimplementations, illustrated data structures may store more or lessinformation than is described, such as when other illustrated datastructures instead lack or include such information respectively, orwhen the amount or types of information that is stored is altered. Thevarious methods and systems as illustrated in the figures and describedherein represent example implementations. The methods and systems may beimplemented in software, hardware, or a combination thereof in otherimplementations. Similarly, the order of any method may be changed andvarious elements may be added, reordered, combined, omitted, modified,etc., in other implementations.

From the foregoing, it will be appreciated that, although specificimplementations have been described herein for purposes of illustration,various modifications may be made without deviating from the spirit andscope of the appended claims and the elements recited therein. Inaddition, while certain aspects are presented below in certain claimforms, the inventors contemplate the various aspects in any availableclaim form. For example, while only some aspects may currently berecited as being embodied in a computer readable storage medium, otheraspects may likewise be so embodied. Various modifications and changesmay be made as would be obvious to a person skilled in the art havingthe benefit of this disclosure. It is intended to embrace all suchmodifications and changes and, accordingly, the above description is tobe regarded in an illustrative rather than a restrictive sense.

What is claimed is:
 1. A system to wirelessly transmit digital content,the system comprising: a fixed location, including: a first directionalantenna configured to wirelessly transmit digital content in a firstdirection; a first omnidirectional antenna configured to wirelesslyreceive first position information from a first vehicle that is aeriallynavigating at a location remote from the fixed location; and a firstdirectional antenna orientation controller configured to orient thefirst directional antenna based at least in part on the first positioninformation received by the first omnidirectional antenna; the firstvehicle including: a second omnidirectional antenna configured towirelessly receive second position information from a second vehicle,the second position information including a horizontal position and analtitude corresponding to the second vehicle; a second directionalantenna configured to wirelessly receive the digital content transmittedfrom the first directional antenna; a second directional antennaorientation controller configured to orient the second directionalantenna so that it is oriented toward the first directional antenna andable to receive the digital content while the first vehicle is inmotion; and a third antenna configured to wirelessly transmit thedigital content to the second vehicle so that the digital content isreceived by a fourth antenna at the second vehicle.
 2. The system ofclaim 1, further comprising: the second vehicle, including: the fourthantenna configured to wirelessly receive the digital content transmittedfrom the first vehicle, wherein the fourth antenna is a directionalantenna; a third directional antenna orientation controller configuredto orient the fourth antenna so that it is able to receive the digitalcontent; and a fifth antenna configured to wirelessly transmit thedigital content to a third vehicle so that the digital content isreceived by a sixth antenna at the third vehicle.
 3. The system of claim1, wherein the first directional antenna is a directional antennaconfigured to operate in an industrial, scientific, and medical (“ISM”)radio band.
 4. The system of claim 1, wherein: the second directionalantenna comprises an electronically steerable antenna.
 5. The system ofclaim 1, wherein the second directional antenna orientation controllercomprises a gimbal configured to mechanically orient the seconddirectional antenna.
 6. The system of claim 1, wherein the first vehicleis at least one of an unmanned aerial vehicle, an aerial vehicle, anunmanned ground based vehicle, a ground based vehicle, an unmanned waterbased vehicle, or a water based vehicle.
 7. A computer implementedmethod, comprising: under control of one or more computing systemsconfigured with executable instructions, determining first positioninformation of a fixed location, the fixed location including a firstdirectional antenna and a first omnidirectional antenna; determiningsecond position information of a first vehicle at a second location thatis remote from the fixed location, the first vehicle including a seconddirectional antenna and a second omnidirectional antenna; transmitting,using the second omnidirectional antenna associated with the firstvehicle, the second position information so that the second positioninformation is received by the first omnidirectional antenna at thefixed location, the first directional antenna being oriented based atleast in part on the first position information and the second positioninformation; determining, based at least in part on the first positioninformation and the second position information, a desired directionalantenna orientation of the second directional antenna so that the seconddirectional antenna is oriented toward and able to wirelessly connectwith the first directional antenna; causing orientation of the seconddirectional antenna according to the desired directional antennaorientation so that the second directional antenna is oriented towardthe first directional antenna and able to wirelessly connect with thefirst directional antenna; establishing a wireless connection betweenthe first directional antenna and the second directional antenna;receiving third position information from a second vehicle at a thirdlocation that is remote from the fixed location and the second location,the third position information including a horizontal position and analtitude corresponding to the second vehicle; and establishing awireless connection between the first vehicle and the second vehicle. 8.The method of claim 7, wherein the first vehicle is moving with respectto the fixed location.
 9. The method of claim 7, wherein the firstvehicle is at least one of an unmanned aerial vehicle, an aerialvehicle, an unmanned ground based vehicle, a ground based vehicle, anunmanned water based vehicle, or a water based vehicle.
 10. The methodof claim 7, further comprising: determining, after the first vehicle hasmoved, fourth position information of the second directional antennacoupled to the first vehicle; and transmitting, using the seconddirectional antenna associated with the first vehicle, the fourthposition information so that the fourth position information is receivedby the first directional antenna at the fixed location, the firstdirectional antenna being oriented based at least in part on the firstposition information and the fourth position information.
 11. The methodof claim 10, further comprising: determining, based at least in part onthe first position information and the fourth position information, asecond desired directional antenna orientation of the second directionalantenna so that the second directional antenna is oriented toward andable to maintain the wireless connection with the first directionalantenna; causing orientation of the second directional antenna accordingto the second desired directional antenna orientation so that the seconddirectional antenna is oriented toward the first directional antenna andable to maintain the wireless connection with the first directionalantenna; and maintaining the wireless connection between the firstdirectional antenna and the second directional antenna.
 12. The methodof claim 7, wherein determining the first position information of thefixed location comprises receiving known position information associatedwith the fixed location.
 13. The method of claim 7, wherein the secondposition information includes at least one of an approximate horizontalposition of the second directional antenna, an approximate altitude ofthe second directional antenna, an approximate angle of the seconddirectional antenna, or an approximate orientation of the seconddirectional antenna.
 14. The method of claim 13, further comprising:determining the approximate horizontal position of the seconddirectional antenna using a global positioning system associated withthe first vehicle.
 15. The method of claim 13, further comprising:determining the approximate altitude of the second directional antennausing an altimeter associated with the first vehicle.
 16. The method ofclaim 7, wherein the first and second omnidirectional antennas areconfigured to operate at approximately 900 MHz; and wherein the firstand second directional antennas are configured to operate atapproximately 5.8 GHz.
 17. The method of claim 7, wherein the seconddirectional antenna is oriented toward the first directional antennausing at least one of a gimbal or an electronically steerable antenna.18. A computer implemented method, comprising: under control of one ormore computing systems configured with executable instructions,receiving, by a second omnidirectional antenna associated with a fixedlocation, first position information of a first vehicle, the firstposition information being transmitted by a first omnidirectionalantenna associated with the first vehicle; determining, based at leastin part on the first position information and known position informationof the fixed location, a desired directional antenna orientation of asecond directional antenna associated with the fixed location so thatthe second directional antenna is oriented toward and able to wirelesslyconnect with a first directional antenna associated with the firstvehicle; causing orientation of the second directional antenna accordingto the desired directional antenna orientation so that the seconddirectional antenna is oriented toward the first directional antenna andable to wirelessly connect with the first directional antenna;establishing a wireless connection between the first directional antennaand the second directional antenna; receiving third position informationfrom a second vehicle, the third position information including ahorizontal position and an altitude corresponding to the second vehicle;and establishing a wireless connection between the first vehicle and thesecond vehicle.
 19. The method of claim 18, further comprising:subsequent to establishing the wireless connection between the firstdirectional antenna and the second directional antenna, receiving, bythe second directional antenna associated with the fixed location,updated position information of the first vehicle, the updated positioninformation being transmitted by the first directional antennaassociated with the first vehicle; determining, based at least in parton the updated position information and the known position informationof the fixed location, an updated desired directional antennaorientation of the second directional antenna associated with the fixedlocation so that the second directional antenna is oriented toward andable to maintain the wireless connection with the first directionalantenna associated with the first vehicle; causing orientation of thesecond directional antenna according to the updated desired directionalantenna orientation so that the second directional antenna is orientedtoward the first directional antenna and able to maintain the wirelessconnection with the first directional antenna; and maintaining thewireless connection between the first directional antenna and the seconddirectional antenna.
 20. The method of claim 19, wherein the updatedposition information of the first vehicle is received by the seconddirectional antenna from the first directional antenna at least one ofcontinuously or at defined intervals.
 21. The system of claim 1, whereinthe first omnidirectional antenna is configured to provide long rangetransmissions at a low bandwidth.
 22. The system of claim 1, wherein thefirst vehicle transmits first position information to the second vehicleand the second vehicle transmits second position information to thefirst vehicle in an alternating manner.
 23. The system of claim 1,wherein the first vehicle holds its position while establishing awireless connection to wirelessly receive the digital content from thefirst directional antenna.